High CPU remains after clean install and new battery
My MBP 2011 is so slow that I can hardly use it. I did a clean install and new battery and use it without downloading any apps, no icloud or dropbox sync, no documents copied. What can cause this? I have a bigger HD which I bought and had installed in Africa but no problems at first.
The problem became unbearable after I upgraded dropbox and started uploading my pictures folder >100 GB.
At this point my mbp will turn off when connecting to power or falling / put to sleep when powered. When on battery I can put it to sleep. This however no longer solves high CPU problem as it did before.
Where to look for an answer?
thanks for tips/ideas/guidance
MacBook Pro (13-inch Early 2011), OS X Yosemite (10.10.2)